[UX] Improve mapping dialog to avoid adding invalid mapping

[sionzee]

Users frequently create incorrect mappings by assigning overlay processes, system utilities, or helper executables to game categories. Common examples:

• steamwebhelper.exe → Battlefield
• obs64.exe → various games
• Discord.exe → game categories

This pollutes the mapping database and causes the wrong category to be applied when these background processes are running.

Current Behavior:

• User can map any process without warnings
• No indication that the process might be incorrect
• Bad mappings only discovered later

Expected Behavior:

• Show confirmation dialog when user maps a suspicious process
• Help users understand what they're actually mapping

Proposed Solution:

Add a smart confirmation dialog:

⚠️ Are you sure?

You're about to map: steamwebhelper.exe
To category: Battlefield 2042

This process name suggests it might be:
- A system utility or overlay
- A background service
- Not the actual game

The actual game process is likely different.

[Cancel] [Map Anyway]

Detection Logic:

• Maintain list of known overlay/utility executables (Steam, Discord, OBS, etc.)
• Check for keywords: "helper", "overlay", "service", "launcher", "updater", "web"
• Warn if process name doesn't match category name at all

Alternative Approaches:

1. Show current window title in mapping UI: "You are mapping: STEAM WEB HELPER (steamwebhelper.exe)"
2. Educational tooltip explaining difference between game process and overlays
3. Suggest correct process based on currently running processes when category is selected